Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: Calcium incresed from 250ppm to 450ppm within a few days

  1. Back To Top    #1
    iggy's Avatar
    Join Date
    Jan 2008
    Location
    The Cool Part of Arizona
    Posts
    175

    Calcium incresed from 250ppm to 450ppm within a few days

    Hi All.

    New Pool filled Jan 2008.
    I thought I had my new pool under contol the past 6 months but we had a major change in my calcium lelevs increasing from 250ppm for the past 6 months to 450ppm in the past week.

    The only thing that happened was a rain that added about 1" of water in the pool and I added one packet of Leslie's shockit with the orange strip call ChlorBrite.

    The weird thiung is that any liquid test I do or the store we get 450 ppm. I use the strips it shows 250ppm. I just did a liquid test a few minutes ago and it was 450ppm and I made sure I mixed well between drops and still came up with 450ppm. Stuck in a fresh strip and it showed 250 PPM.

    I plan on taking my water to 2 differnt pool stores today to see what they come up with.

    FC 5
    TC 5
    pH 7.6
    Alk 80
    CYA 70
    In-Ground SWG pool 11,000 gal., Jandy CL460 Filter, 1.5hp Stealth Jandy pump, Paramount PV3 In-Floor cleaning sys., Goldline SWG, Hayward Color Logic 2.5 LED Light

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: Calcium incresed from 250ppm to 450ppm within a few days

    There are various ways to do the CH test wrong, but if you have had it for a while and were getting good numbers before it seems unlikely that you are doing it wrong. The reagents can go bad, though that usually only happens if they get very hot. Periods of extremely low PH can leach calcium out of the pool walls.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3
    iggy's Avatar
    Join Date
    Jan 2008
    Location
    The Cool Part of Arizona
    Posts
    175

    Re: Calcium incresed from 250ppm to 450ppm within a few days

    Thanks JasonLion for your thoughts.
    Yes I have been testing for awhile and know my numbers.
    The test kit
    My pH is usually been 7.4 - 7.8 and I check it often but you mentioned that leeching which may be possible as the pool is only 6 months old. It also could be that my city water which is hooked up to my automatic fill could have increased hardness since I filled. I will keep you posted.
    In-Ground SWG pool 11,000 gal., Jandy CL460 Filter, 1.5hp Stealth Jandy pump, Paramount PV3 In-Floor cleaning sys., Goldline SWG, Hayward Color Logic 2.5 LED Light

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •